Let's Design and Build a (mostly) Digital Theremin!

Posted: 1/16/2025 1:45:36 PM
dewster

From: Northern NJ, USA

Joined: 2/17/2012

Articles

A nice article on CIC filters: https://tomverbeure.github.io/2020/09/30/Moving-Average-and-CIC-Filters.html.  In particular I like the way he emphasizes the (limited) CIC use cases.  The references at the end are really valuable too.

Evidently there's a name for the buffer I stumbled across in college: https://en.wikipedia.org/wiki/Diamond_buffer.


Posted: 1/16/2025 5:36:39 PM
ILYA

From: Theremin Motherland

Joined: 11/13/2005

"A nice article on CIC filters"

Yea, really nice. Minimum of math, maximum of graph.

Posted: 1/20/2025 8:48:24 PM
pitts8rh

From: Minnesota USA

Joined: 11/27/2015

Eric, you've seen this already but I wanted to post my wood P3 here so it can be found.  I hate Facebook with the endless cascade of posts hidden by the  "would you like to know more" drop downs.  I sometimes can't even find stuff I saw in the last day or two.

This is the latest and maybe the last P3 model D-Lev that I built for myself using leftover parts.  I wanted to try a wood panel look so I veneered one of the shells with flame maple and made wood knobs and a logo to go with it.  The antennas are solid brass but all of the other brass colored parts are 3D printed.

I'm looking at a new cabinet design that is also all wood but with different antenna mounts, a built-in reverb, and pitch preview monitor speakers on the ends of the panel facing the player (and a digital amp to drive it).  It will look a little larger but I hope to keep it the same size as the P3 model if you take into account the antenna mounts that stick out.

Anyway, here are some pictures and a video:

 

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